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Marquise|Lab Grown|IGI

3.12ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG839684893

Shape and cutting style on the report: Hexagonal modified brilliant

Certificate IGI LG839684893

Diamond specifications and retailer prices

From $3,394 SGD
$2,655 USD
As of October 31, 2026
Save $14,682 SGD (81%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $18,077 SGD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.12ct lab-grown marquise diamond

This 3.12ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839684893 or 839684893. Listed at 8 retailers as of October 31, 2026, with prices from $3,394 to $18,077, a $14,682 spread on the same certified stone. Do Amore Diamonds lists it at $18,077. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.12
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839684893
Dimensions13.89 × 7.19 × 4.68 mm
L/W Ratio1.93
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
13.89 mm7.19 mm3.12 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839684893
Side View
Table 62.0%Crown 35.4°Girdle: MED-STKPavilion 35.5°Culet: NoneDepth 65.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $18,077 SGD|Low: $3,394 SGD|High: $18,077 SGD|Avg: $8,168 SGD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 6$3,394 SGD
Retailer 4$3,580 SGD
Retailer 8$5,318 SGD
Retailer 7$9,863 SGD
Retailer 2$9,964 SGD
Retailer 3$11,315 SGD
Retailer 5$12,985 SGD
Do Amore Diamonds$18,077 SGD

9 data points across 8 retailers

8 retailers$3,394 SGD to $18,077 SGD

A
Cheapest Retailer
-
$3,394 SGD
$2,655 USD
Final sale: no returns
A
Retailer 2
-
$3,580 SGD
$2,800 USD
View
A
Retailer 3
-
$5,318 SGD
$4,160 USD
View
B+
Retailer 4
-
$9,863 SGD
$7,715 USD
View
B+
Retailer 5
-
$9,964 SGD
£6,137 GBP
View
B+
Retailer 6
-
$11,315 SGD
£6,969 GBP
View
B
Retailer 7
-
$12,985 SGD
$10,158 USD
View
Most Expensive
B
Do Amore Diamonds
20-E103545 · Oct 31
$18,077 SGD
$14,140 USD
View
7 more retailers have this diamond
Prices start from $3,394 SGDSave up to $14,682 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.12ct Marquise
$3,394 SGD